066 - Repair or Replace?

[bobh]

I've got an aftermarket crank in mine (came from Greece via eBay) and it seems fine. Been in 3 years and I happily mill with it. Not sure I'd want to trust an aftermarket top end though, mine failed very quickly and I ended up biting the bullet and fitting an original stihl.

[Mountain man]

Buy a new one.

[haforbes]

Ended up putting a another crank in it. Fitted and running now although it seems a bit lean...I've never played around with a chainsaw carb, is there a standard point I can turn the H + L screws to work from? I have a suspicion they've been played with in the past. I put new crank seals in so that shouldn't be a problem and the carb boot looks good. Anything else to look for? Cheers

[spudulike]

Ended up putting a another crank in it. Fitted and running now although it seems a bit lean...I've never played around with a chainsaw carb, is there a standard point I can turn the H + L screws to work from? I have a suspicion they've been played with in the past. I put new crank seals in so that shouldn't be a problem and the carb boot looks good. Anything else to look for? Cheers

 

You need to make sure there are no limiter caps on the carb - little red and black plastic caps. Turn the H & L screws all the way in but just until they are LIGHTLY seated and then un do to 1 turn out but would do the H screw to 1& 1/4 turns out for safety.

 

Fire the saw up and then adjust the idle. Rev it up a bit and see if the idle settles down to and even idle speed quickly. If it hangs on to the revs then it may have an air leak.

 

When you rev it flat out, it shouldn't scream, if it does, again, you may have an airleak - this is why I always pressure/vac test rebuilt saws - I have saved many saws from damage by finding leaks in good time!

 

The spark plug will give a good indication of good running - look for a light tan colour on the central electrode.

 

If you can't get the idle to lower even with the idle screw right out, you have a BIG air leak:thumbdown: Don't mask it by over richening the L screw - this is a BODGE!

[Cut4fun]

If you got other saws to do it's work right now. Build it.

 

If you dont, buy another saw that will and build it on your free time.

 

Either way IMO build it.